<template>
  <div class="table">
    <div class="crumbs">
      <i class="el-icon-tickets"></i>歌单的歌曲管理
    </div>
    <div class="container">
      <div class="handle-box">
        <el-button type="primary" size="mini" @click="delAll">批量删除</el-button>
        <el-input size="mini" v-model="select_word" placeholder="请输入歌曲名" class="handle-input"></el-input>
        <el-button type="primary" size="mini" @click="centerDialogVisiable=true">添加歌曲</el-button>
      </div>
    </div>
    <el-table size="mini" ref="multipleTable" border style="width: 100%" height="680px" :data="tableData" @selection-change="handleSelectChange">
      <el-table-column type="selection" width="40"></el-table-column>
      <el-table-column prop="name" label="歌手-歌名" align="center"></el-table-column>
      <el-table-column label="操作" align="center" width="150">
        <template slot-scope="scope">
          <el-button size="mini" @click="handleEdit(scope.row)">编辑</el-button>
          <el-button size="mini" type="danger" @click="handleDelete(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <el-dialog title="添加歌曲" :visible.sync="centerDialogVisiable" width="400px" center>
      <el-form :model="registerForm" ref="registerForm" label-width="80px" action="" id="tf">
        <el-form-item prop="singerName" label="歌手名字" size="mini">
          <el-input v-model="registerForm.singerName" placeholder="歌手名字"></el-input>
        </el-form-item>
        <el-form-item prop="songName" label="歌曲名字" size="mini">
          <el-input v-model="registerForm.songName" placeholder="歌曲名字"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer">
        <el-button size="mini" @click="centerDialogVisiable=false">取消</el-button>
        <el-button size="mini" @click="getSongId">确定</el-button>
      </span>
    </el-dialog>

    <el-dialog title="删除歌曲" :visible.sync="delVisible" width="300px" center>
      <div align="center">删除不可恢复，是否确定删除？</div>
      <span slot="footer">
        <el-button size="mini" @click="delVisible=false">取消</el-button>
        <el-button size="mini" @click="deleteRow">确定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
  import {mixin} from '../mixins'
  import {listSongDetail,songOfSongId,songOfSongName,listSongAdd,delListSong} from '../api'

  export default {
    mixins: [mixin],
    data() {
      return {
        centerDialogVisiable: false,//添加弹窗是否显示
        delVisible: false,        //删除弹窗是否显示
        registerForm: {//添加框
          singerName: '', //歌手名字
          songName: ''   //歌名
        },
        tableData: [],
        select_word: '',
        tempData: [],
        idx: -1,             // 当前选择项
        multipleSelection: [],  //哪些项已经打勾
        songListId: '' //歌单id
      }
    },
    watch: {
      //搜索框里面的内容发生变化的时候，搜索结果table列表内容跟着发生变化
      select_word: function () {
        if(this.select_word == ''){
          this.tableData = this.tempData
        }else {
          this.tableData = []
          for(let item of this.tempData){
            if(item.name.includes(this.select_word)){
              this.tableData.push(item)
            }
          }
        }
      }
    },
    created () {
      this.songListId = this.$route.query.id;
      this.getData();
    },
    methods: {
      //查询所有歌手
      getData () {
        this.tempData = []
        this.tableData = []
        listSongDetail(this.songListId).then(res => {
          for (let item of res) {
            this.getSong(item.songId);
          }
        })
      },
      //根据歌曲id查询歌曲对象，放到tempData和tableData中
      getSong (id) {
        songOfSongId(id).then(res => {
          this.tempData.push(res);
          this.tableData.push(res);
        }).catch(error => {
          console.log(error);
        })
      },
      getSongId () {
        let _this = this;
        let songOfName = _this.registerForm.singerName + "-" + _this.registerForm.songName;
        songOfSongName(songOfName).then(
          res => {
            console.log(res[0])
            _this.addSong(res[0].id);
          }
        )
      },
      //添加歌曲
      addSong (songId) {
        let _this = this;
        let params = new URLSearchParams();
        params.append('songId', songId)
        params.append('songListId', this.songListId)

        listSongAdd(params).then(res => {
          if (res.code == 1) {
            this.getData()
            this.notify('添加成功', 'success')
          } else {
            this.notify('添加失败', 'error')
          }
        }).catch(error => {
          console.log(error)
        })
        _this.centerDialogVisiable = false
      },
      //删除一条歌曲
      deleteRow () {
        delListSong(this.idx,this.songListId).then(res => {
          if (res) {
            this.getData();
            this.notify("删除成功", "success");
          } else {
            this.notify("删除失败", "error");
          }
        }).catch(error => {
          console.log(error);
        })
        this.delVisible = false;
      }
    }
  }
</script>
<style scoped>
  .handle-box {
    margin-bottom: 20px;
  }
  .song-img{
    width: 100%;
    height: 80px;
    border-radius: 5px;
    margin-bottom: 5px;
    overflow: hidden;
  }
  .handle-input{
    width: 300px;
    display: inline-block;
  }
  .pagination {
    display: flex;
    justify-content: center;
  }
  .play {
    position: absolute;
    z-index: 100;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    top:18px;
    left: 15px;
  }
  .icon{
    width: 2em;
    height: 2em;
    color: white;
    fill: currentColor;
    overflow: hidden;
  }
</style>
